package com.doubi.common.aspectj;

import com.alibaba.fastjson.JSONObject;
import com.doubi.common.aspectj.annotation.SysLog;
import com.doubi.common.config.shiro.ShiroUtil;
import com.doubi.model.sys.TSysLog;
import com.doubi.model.sys.TSysUser;
import com.doubi.service.SysLogService;
import com.doubi.utils.AddressUtils;
import com.doubi.utils.string.StringUtils;
import lombok.extern.slf4j.Slf4j;
import org.aopalliance.intercept.Joinpoint;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Async;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;

import javax.servlet.http.HttpServletRequest;
import java.lang.reflect.Method;
import java.util.Date;
import java.util.Map;

/**
 * Created by IntelliJ IDEA.
 * User: MrDoubi
 * 操作日志
 * Date: 2019/1/10
 * Time: 17:22
 */
@Aspect
@Component
@EnableAsync
@Slf4j
public class LogAspect {

    @Autowired
    private SysLogService sysLogService;


    // 配置织入点
    @Pointcut("@annotation(com.doubi.common.aspectj.annotation.SysLog)")
    public void logPointCut() {
    }

    /**
     * 前置通知 用于拦截操作
     *
     * @param joinPoint 切点
     */
    @AfterReturning(pointcut = "logPointCut()")
    public void doBefore(JoinPoint joinPoint) {
        handleLog(joinPoint, null);
    }

    /**
     * 拦截异常操作
     *
     * @param joinPoint bean
     * @param e         异常
     */
    @AfterThrowing(value = "logPointCut()", throwing = "e")
    public void doAfter(JoinPoint joinPoint, Exception e) {
        handleLog(joinPoint, e);
    }

    @Autowired
    private HttpServletRequest servletRequest;


    @Async("taskExecutor")
    protected void handleLog(final JoinPoint joinPoint, final Exception e) {
        try {
            // 获得注解
            SysLog controllerLog = getAnnotationLog(joinPoint);
            if (controllerLog == null) {
                return;
            }
            // 获取当前的用户
            TSysUser currentUser = ShiroUtil.getUser();
            // *========数据库日志=========*//
            TSysLog operLog = new TSysLog();
            operLog.setStatus("0");
            // 请求的地址
            String ip = ShiroUtil.getIp();
            operLog.setOperIp(ip);
            operLog.setOperUrl(servletRequest.getRequestURI());
            operLog.setOperName(currentUser.getName());

            if (e != null) {
                operLog.setStatus("-1");
                operLog.setErrorMsg(StringUtils.substring(e.getMessage(), 0, 2000));
            }
            // 设置方法名称
            String className = joinPoint.getTarget().getClass().getName();
            String methodName = joinPoint.getSignature().getName();
            operLog.setMethod(className + "." + methodName + "()");
            operLog.setOperTime(new Date());
            // 处理设置注解上的参数
            getControllerMethodDescription(controllerLog, operLog);
            // 保存数据库
            // 操作地点
            //operLog.setOperLocation(AddressUtils.getRealAddressByIP(ip));
            sysLogService.saveBean(operLog);
        } catch (Exception exp) {
            // 记录本地异常日志
            log.error("==前置通知异常==");
            log.error("异常信息:{}", exp.getMessage());
            exp.printStackTrace();
        }
    }

    /**
     * 获取注解中对方法的描述信息 用于Controller层注解
     */
    private void getControllerMethodDescription(SysLog log, TSysLog operLog) {
        // 设置标题
        operLog.setTitle(log.title());
        // 是否需要保存request，参数和值
        if (log.isSaveRequestData()) {
            // 获取参数的信息，传入到数据库中。
            setRequestValue(operLog);
        }
    }

    /**
     * 获取请求的参数，放到log中
     *
     * @param operLog bean
     */
    private void setRequestValue(TSysLog operLog) {
        Map<String, String[]> map = servletRequest.getParameterMap();
        String params = JSONObject.toJSONString(map);
        operLog.setOperParam(StringUtils.substring(params, 0, 255));
    }

    /**
     * 是否存在注解，如果存在就获取
     */
    private SysLog getAnnotationLog(JoinPoint joinPoint) {
        Signature signature = joinPoint.getSignature();
        MethodSignature methodSignature = (MethodSignature) signature;
        Method method = methodSignature.getMethod();
        if (method != null) {
            return method.getAnnotation(SysLog.class);
        }
        return null;
    }
}
